P    #regions in PPM
# 2018-04-06 15:03:27 -0500  bmrbmb@tonga.nmrfam.wisc.edu
# low field   high field   mi   maxi
  174.24217667414587  170.65291835314287  0.052  2.032  # for region 1
  170.65291835314287  6.5259242200054635  0.041  18.341  # for region 2
  6.5259242200054635  3.5892583210030047  0.052  2.032  # for region 3
